Louis Koo

Sze-To Bo

Aaron Kwok Fu-Shing

Tony

Cherrie Ying Choi-Yi

Mona

Tony Leung Ka-fai

Lee Kong

Eddie Cheung Siu-Fai

Boss Savage

Jordan Chan Siu-Chun

Mona's Agent

Lo Hoi-Pang

Master Cheng

Calvin Choi Yat-Chi

Jing

Jack Kao

Mona's Father

Hung Wai-Leung

Arcade Player (uncredited)

Lu Ching-Ting

Savage's Runner (uncredited)

Ronald Yan Mau-Keung

Sze-To's Boss

Yuen Bun

Sze-To's Boss (uncredited)

Ho Sai-Man

Fatty

Well Chin Wing-Wai

Club Customer

Li Haitao

Club Saxophonist

Jimmy Wong

Taxi Driver (uncredited)

Lee Long-Ming

Gambler

Wing Chung

Judoist

Kary Ma Ho-Yee

Judoist

Kelly Lau Miu-Kei

Judoist

Kwok Yue-Kin

Judoist

Tsang Tak-Ming

Judoist

Robin Wan Kam-Fai

Judoist

Joe Lee Nim-Cho

Judoist

Tai Bo

Judoist

Tsui Ka-Ho

Judoist

Kwok Pak-Yin

Judoist

Yeung Fan

Judoist

Cheung Wai-Kit

Judoist

David M. Richardson

Editor

Cheng Siu-Keung

Director of Photography

Tony Yu

Art Direction

Au Kin-Yee

Writer

Yip Tin-Shing

Writer

Johnnie To

Director

Peter Kam Pau-Tat

Original Music Composer

Stanley Cheung Sai-Kit

Costume Design

Yau Nai-Hoi

Writer

Chiu Chi-Shing

Unit Manager

Simon Fung

Assistant Editor

Lam Wai-Lun

ADR Recordist

Lam Wai-Lun

Boom Operator

Johnnie To

Producer

Stephen Lam Bing-Kwan

Producer

Pad Chan Wai-Hung

First Assistant Director

Ho Chi-Hang

First Assistant Director

Ng Kwok-Fai

Boom Operator

Charles Heung

Producer

Law Wing-Cheong

Assistant Director